PAULSSON, Fredrik; ENGMAN, Jonas. Treating metadata as annotations: separating the content markup from the content. International Journal of Emerging Technologies in Learning (iJET), [S. l.], v. 2, n. 1, 2006. DOI: 10.3991/ijet.v2i1.56. Disponível em: https://online-journals.org/index.php/i-jet/article/view/56. Acesso em: 16 apr. 2024.